Herdr Pluck

Herdr Pluck is a Herdr plugin for quickly copying visible terminal tokens or opening visible URLs with short keyboard hints, inspired by tmux-fingers.

Invoke an action while a pane is focused and type the displayed hint for the item you want. The pluck action copies the selected text to your system clipboard, while the URL action opens the selection in your default browser. Escape or Ctrl-C cancels.

Requirements

• Herdr 0.7.4 or newer
• For release installs, a download tool:
  • curl or wget
• Rust/Cargo only when forcing a source build or when no matching prebuilt binary is available
• For copying, a system clipboard command:
  • macOS: pbcopy
  • Linux Wayland: wl-copy
  • Linux X11: xclip or xsel
• For opening URLs:
  • macOS: open
  • Linux: xdg-open

Install

From the remote repository:

herdr plugin install rmarganti/herdr-pluck

Published releases provide prebuilt binaries for these targets:

• macOS Apple Silicon: aarch64-apple-darwin
• Linux x86_64: x86_64-unknown-linux-musl

To install a specific branch, tag, or commit, pass --ref:

herdr plugin install rmarganti/herdr-pluck --ref main

Install first downloads the GitHub Release asset matching the version in herdr-plugin.toml. If that asset is unavailable, it falls back to a local Cargo build when Rust is available.

From this checkout:

herdr plugin link .

By default, linking also installs the prebuilt binary matching herdr-plugin.toml. To build the checked-out source instead:

HERDR_PLUCK_BUILD_FROM_SOURCE=1 herdr plugin link .

Verify Herdr can see the action:

herdr plugin action list --plugin rmarganti.herdr-pluck

The action ids are:

rmarganti.herdr-pluck.pluck
rmarganti.herdr-pluck.open-url

Keybinding

Add a Herdr plugin_action binding to your Herdr config, choosing any free key you prefer:

[[keys.command]]
key = "prefix+q"
type = "plugin_action"
command = "rmarganti.herdr-pluck.pluck"
description = "pluck visible token"

To bind the dedicated URL action separately:

[[keys.command]]
key = "prefix+o"
type = "plugin_action"
command = "rmarganti.herdr-pluck.open-url"
description = "open visible URL"

Reload Herdr config after editing:

herdr server reload-config

Usage

1. Focus a Herdr pane containing a URL, path, commit SHA, UUID, IP address, long numeric identifier, hex literal, Kubernetes reference, Git status path, branch, or diff path.
2. Invoke rmarganti.herdr-pluck.pluck through your keybinding or Herdr's plugin action command.
3. Herdr Pluck opens a temporary picker tab that mirrors the source layout and shows hints over copyable text in the target pane.
4. Type the shown one- or two-letter hint to copy that token and close the picker.
5. Press Escape or Ctrl-C to cancel without copying.

The open-url action uses the same picker flow, but shows only http://, https://, and file:// URLs and opens the selected URL through the system default handler without changing the clipboard.

You can also invoke either action from the CLI:

herdr plugin action invoke rmarganti.herdr-pluck.pluck
herdr plugin action invoke rmarganti.herdr-pluck.open-url

What gets matched

Herdr Pluck recognizes these built-in token types, in priority order:

1. URLs
2. Git status paths, Git upstream branch names, and diff paths
3. Kubernetes resource references such as pod/nginx or deployment.apps/frontend
4. File paths
5. UUIDs
6. Deployment-managed Kubernetes pod names
7. Git SHAs
8. Hex literals such as 0xdeadBEEF
9. IPv4 addresses
10. Long numeric identifiers

Custom global patterns can be added in the plugin config directory:

CONFIG_DIR="$(herdr plugin config-dir rmarganti.herdr-pluck)"
$EDITOR "$CONFIG_DIR/config.toml"

Example:

[[patterns]]
name = "jira"
regex = "\\b[A-Z][A-Z0-9]+-[0-9]+\\b"
priority = 25

Project-local patterns are also enabled by default. Herdr Pluck looks for .herdr-pluck.toml from the focused pane's working directory up to the Git root. Disable or customize this in the global config:

[project]
patterns = true
pattern_files = [".herdr-pluck.toml"]

Project-local config files use the same [[patterns]] shape as global config. Pattern precedence for equal-priority overlaps is project-local, then global, then built-ins.

regex uses Rust regular expression syntax. If a named capture called match is present, only that capture is copied; otherwise the whole regex match is copied:

[[patterns]]
name = "trace-id"
regex = "trace_id=(?<match>[A-Za-z0-9_-]+)"
priority = 25

For trace_id=abc123, this pattern highlights and copies only abc123.

Lower priority values win overlapping matches. If omitted, custom pattern priority defaults to 25.

When identical text appears more than once, every visible occurrence shows the same hint and copies the same text.

Releasing binaries

Tag releases as vX.Y.Z. GitHub Actions validates the crate, builds release archives, and uploads platform binaries to the matching GitHub Release.

Troubleshooting

If invoking the action does nothing useful, check that the plugin is linked and the installed binary exists:

herdr plugin link .
ls -l ./bin/herdr-pluck
herdr plugin action list --plugin rmarganti.herdr-pluck

If no release asset matches the plugin version, make sure Rust/Cargo is available for the local fallback build. Set HERDR_PLUCK_BUILD_FROM_SOURCE=1 to skip the release download and build the checked-out source explicitly.

If copying fails, install one of the supported clipboard tools for your platform and try again.